Mixing machinery.



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WAH j( Mr l-) AmGm Q J LIM Il=|||| Patented February '7, 1905.

UNITED STATES ATENT @Fisica ERNEST LESLIE RANSOME AND ARTHUR lVLFRll) RANSOME, OE NEV YORK, N. Y.

MIXING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 782,052, dated February '7, 1905.

Application filed April l, 1902. Serial No. 100,940.

Be it known that we, ERNEST LESLIE RAN- sou n and ARTHUR VILFRID RANsoMn, citizens of the United States. residing at Greater New York, in the State of New York, have invented a new and Improved hlixing-hflachine, of which the 'following is a full, clear, and exact description.

Our invention relates to improvements in portable n'iixing-machines of that class known as drinn-mixers," the same being adapted to mix materials in batches, although we do not desire to confine ourselves to this particular class of mixing-machines, because our improvements can be more widely applied.

The primary object of our invention is to increase the etliciency of machines of this class. This end is accomplished by the employment of devices which facilitate the operations of feeding the material to the mixer and discharging the mixed material therefrom.

Our invention in part consists of a peculiar form of pivoted hopper comprising two members arranged vat an angle one to the other, the inner member extending' in an upward direction from the outer member when the hopper is lowered to a loading position, said inner member forminga chute in combination with a hoisting' drum or windlass and a cable or chain connected with said hopper and coiled on the drum or windlass, whereby the hopper may be quickly elevated to a discharging position, and it may be lowered by gravity to a loading position. The hopper is pivotally attached to the feed end of the machine in such a manner that it may be lowered for the materials to be placed therein at the lowest level of the machine,and by operating' the hoisting mechanism a rotary motion is given to the hopper for the purpose of raising it, so that the materials to be mixed can be delivered into the machine from the chute member of said hopper at a higher level. By the use of this hopper we dispense with the operation of wheeling the material, which requires the use of wheelbarrows and an inclined runway, and we also ebviate the loss of time entailed in wheeling the material direct from several wheelbarrows one at a time, as is commonly practiced in this art. The employment of our charging mechanism, which includes the hopper, greatly `facilitates the ehm-ging of the machine. lVhile the machine is mixing one batch, another batch may be placed in said hopper, and as soon as the machine is emptied this second batch can at once be discharged into the machine.

rln the drawing hereto annexed, Vforming a part of this specilication, the ligure represents a side elevation of a drum mixing-machine having our improvei'nents applied thereto, the dotted lines illustrating raised positions of the charging-hopper and ot' the discharging tub or receptacle. l

A portable mixer of the drum type is indicated bythe reference character A, said mixer comprising a suitable wheeled frame or truck on which is revolubly mounted a drum adapted to rotate on a horizontal axis and of such internal construction as will insure the intimate admixture of the materials deposited therein. Machines of this type are well known to those skilled in the art,and it is not considered necessary to fully explain the construction and mode of operation thereof.

One of the important features of our invention consists of a chargingor feed hopper, which is mounted adjacent to the inlet side or end ofthe revoluble drum. This hopper consists of two rigidly-connected members B BQ which are disposed atan angle one to the other, as shown bythe drawing. The member B of the hopper constitutes a chute extension of the member B, and said member B' is mounted en or connected with a shaft axle or trunnion F, the latter being supported bythe posts or supports (`r, which are attached to the frame of themixing-machine. The shaft er axle E is provided with an arm l, to which is hitched one end of a hoist rope, cable, or chain, the latter being coiled on a drum of the windlass l'l. This windlass is suitably mounted on the frame of the mixing-machine, and with the windlass is associated any suitable means for rotating the same Vfor the purpose of ceiling the cable or chain on a drum of the windlass or for allowing said chain to be drawn or uncoiled from the windlass by the I and is reeved around a suitable guide at the operation of lowering the charging-hopper.

It will be understood that the chute member or extension B/ or' the angular hopper is pivotally supported at a point intermediate ot' its length and adjacent to the receiving end of the revoluble drum forming one element of the mixing-machine, said hopper being lowered to its loaded position by gravity. The angular hopper is capable of a pivotal movement on the horizontal axis afforded by the shaft or axle F, thus permitting the hopper to be moved to the loading position shown by full lines in the drawing, wherein the member B rests on the ioor or ground, so that the load or batch of materials can be dumped into said member of the hopper. Said hopper is adapted to be elevated to the discharging position indicated by dotted lines in the drawing, and during such elevation the hopper turns on its horizontal axis until it assumes a position wherein the member B is projected through the receiving end of the revoluble drum, so that the load is free to slide or roll by gravity from the hopper directly into the mixer. The employment of the hoisting mechanism herein shown and described enables the angular charging-hopper to be quickly raised from its loading position to its dumping position,and by slaclening the chain or cable between the windlass and the arm I of the shaft or axle the hopper is lowered to its loading position, having the member B thereof disposed on a level below the drum and, in a position to allow the materials to be easily dumped therein without lirst raising the materials to an elevated point for discharge into the machine.

In connection with the mixing-drum we have shown thev machine as being equipped with means for conveniently discharging a batch of material from the drum. A chute C is disposed in an' inclined position within the drum for the purpose of receiving the mixed material from the machine and discharging the mixture into a tub or receptacle D. The chute C is inclined downwardly with relation to the upper part of the mixing-drum, and the chute extends beyond the drum for a suitable distance to discharge the material into the tub or receptacle. This tub is arranged to traverse a runway K, which is inclined in an opposite direction to the chute C, thereby providing for the necessary clearance between the tub D and the lower delivery end of the chute C when the tub moves in an inclined direction along the runway K. This arrangement of the parts C, D, and K allows the tub to pass the end of the chute without coming in contact therewith when the tub is raised or lowered, and said tub is adapted to take its loading position below the delivery end of the chute, as indicated by full lines in the drawing. A hoisting-cable L is connected operatively with a part of the tub or receptacle upper end of the runway, said cable being connected with a drum of the windlass H so as to be coiled thereon and to be operable for elevating' the tub D in an inclined path. The toot or' the runway K is attached in a suitable way to the frame ot' the machine adjacent to the delivery end ot the drum and the chute, and the head of this runway is held in the required position by suitable guys M, also attached to the frame of the machine, as shown.

The hoisting-tub D is ot' sufficient capacity to contain a charge or batch otmaterial adapted to be mixed by the improved mixing-machine, and in constructing or building these machines they are made ot' different sizes, the hoisting-tub D of each machine being so proportioned to the revoluble drum thereof that said tub will contain the entire batch or chargev ot' material which is placed in said drum by the operation ot' the angular charging-hopper. The hopper in its lowered loading position is adapted to receive the proper quantities ot different materials which are to form a batch or charge to be mixed by the rotation of the drum, and after the batch otl materials shall have been deposited in the hopper the latter is turned to elevate the member B and depress the member B, the latter being projected into the drum and the material being free to slide from the hopper into said drum. The hoisting-tub D travels on the inclined runway in order that it may assume the loading' and discharging positions shown by full and dotted lines, respectively, in the drawing. After the batch in the drum is discharged by the chute into the tub the windlass H is rotated and the cable Lis coiled thereon so as to raise the tub to the unloading position, said tub being tilted and discharging' into a suitable conveyance.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. The combination with a mixer, comprising a frame and a mixing-drum thereon, of a charging-hopper comprising two angularlydisposed members, means for pivotall y mounting said hopper on the frame, the p ivot lying intermediate the ends of one member of the hopper and the other member ot the hopper extending outward from the mixer, a swinging arm in connection with the pivot of the hopper, to operate the same, a winding' device mounted on the frame of the mixer, and a flexible connection between said winding device and arm.

2. The combination with a mixing apparatus, comprising a frame and a mixing-drum mounted thereon, of a charging-hopper comprising two angularly-disposed rigidly-connected members, and means for pivotally mounting the hopper on the frame, the hopper extending outward from the frame and the pivot being' located intermediate the ends ot' IOO the inner member, whereby to allow the outer member to move so that the base thereof may be in close proximity to and substantially parallel with the horizontal plane of the base of the apparatus when the hopper is in its outward position, and the inner member being capable of swinging into the receiving end of the drum when the hopper is thrown to its discharge position.

3. The combination with a mixing apparatus, comprising a `frame and a drum revolubly mounted thereon, of a Charging-hopper comprising two angularly-disposed rigidly-oonneeted members, means for pivotally mounting the hopper on the frame, the hopper extending outward from the frame and the pivot beingl located intermediate the ends of the inner member, whereby to allow the outer member to more so that the base thereof may be in close proximity to and substantially parallel with the horizontal plane of the base of the apparatus when the hopper is in its outward position and the inner member being capable of swingingI into the receiving' end of the drum when the hopper is thrown to its discharge position, and means mounted on the frame of the mixer and having' eonneetion with the hopper to facilitate the operation thereof.

et. The Combination with a mixer, oompris- 30 ing a revoluble mixing-drum having' an open charging' end, of a hopper comprising' two p angularly-disposed` rigidly-eonneeted members lying at said eharginp end of the drum\ and extending outward therefrom, means for 35 pivotally mounting the hopper, the pivot being located intermediate the ends of the inner member of the hopper, whereby to allow the e outward member of the hopper to more so that the base thereof may be in elose proximity to 40 and substantially parallel with the horizontal plane of the base of the apparatus when the hopper is in its outward position and to allow the inner member of the hopper to swinginto the said open Chargingend of the drum when 45 the hopper is in its inner position, and means t for operating the hopper.

ERNEST LESLIE RANSOM F..

ARTHUR lVlLFlll) RANSOME.

Witnesses: l

Joux Ennicxnr, B. F. Misommz. 

